Every 100th hamburger manufactured is checked to determine its fat content. Select one: O a. Random sampling O b. Systematic sampling O c. Cluster sampling O d. Startified sampling
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- As of January 1, 2014, there were 438 existing cases of Type I diabetes in Boulder, CO. The most recent Census reported an estimate of 313,333 residents living in Boulder on January 1 2014. With this information, what measure of Type 1 diabetes frequency can you calculate? a. Odds ratio b. Point Prevalence c. Cumulative incidence d. Incidence density rate e. Prevalence ratioA programmer plans to develop a new software system. In planning for the operating system that he will use, he needs to estimate the percentage of computers that use a new operating system. How many computers must be surveyed in order to be 90% confident that his estimate is in error by no more than three percentage points? Complete parts (a) through (c) below. a) Assume that nothing is known about the percentage of computers with new operating systems. n = (Round up to the nearest integer.) b) Assume that a recent survey suggests that about 98% of computers use a new operating system. n= (Round up to the nearest integer.) c) Does the additional survey information from part (b) have much of an effect on the sample size that is required? O A. Yes, using the additional survey information from part (b) dramatically increases the sample size. O B. No, using the additional survey information from part (b) only slightly increases the sample size. OC. No, using the additional survey…Many states are carefully considering steps that would help them collect sales taxes on items purchased through the Internet. How many randomly selected sales transactions must be surveyed to determine the percentage that transpired over the Internet? Assume that we want to be 95% confident that the sample percentage is within two percentage points of the true population percentage for all sales transactions. n= (Round up to the nearest integer.)
- Identify the following measures as either quantitative or qualitative: a. The genders of the first 40 newborns in a hospital for one year. b. The natural hair color of 20 randomly selected fashion models. c. The ages of 20 randomly selected fashion models. d. The fuel economy in miles per gallon of 20 new cars purchased last month. e. The political affiliation of 500 randomly selected voters.A. Find the proportion runners with the time less than 160 minutes? Show work B. Find the proportion of times 201 minutes or 209 minutes ? Show work C. Describe the shape of the distribution? Identify the class that contains the 50th percentile. is this a typical time ?identify the runners in the 50th percentile. Show workYou are the operations manager for an airline and you are considering a higher fare level for passengers in aisle seats. How many randomly selected air passengers must you survey? Assume that you want to be 90% confident that the sample percentage is within 5.5 percentage points of the true population percentage. Complete parts (a) and (b) below. a. Assume that nothing is known about the percentage of passengers who prefer aisle seats. (Round up to the nearest integer.) b. Assume that a prior survey suggests that about 38% of air passengers prefer an aisle seat. (Round up to the nearest integer.)
- The department head of a private secondary school in Marikina City surveyed randomly selected students from each grade level to know their readiness in limited face-to-face classes. a. Simple Random Sampling b. Systematic Sampling c. Stratified Sampling d. Cluster SamplingA programmer plans to develop a new software system. In planning for the operating system that he will use, he needs to estimate the percentage of computers that use a new operating system. How many computers must be surveyed in order to be 99% confident that his estimate is in error by no more than four percentage points? Complete parts (a) through (c) below. a) Assume that nothing is known about the percentage of computers with new operating systems. n= (Round up to the nearest integer.)Identify the type of sampling used: random, systematic, convenience, stratified, or cluster. To estimate the percentage of defects in a recent manufacturing batch, a quality control manager at General Foods selects every 10th soup can that comes off the assembly line starting with the fifth until she obtains a sample of 110 soup cans. Which type of sampling is used? O A. Convenience O B. Stratified O C. Cluster O D. Random O E. Systematic